Half to heeman d



(No Model.)

J. M. OSGOOD. Curtain Fixtures.

Patented Dec. 14, 1880.

LlNT nn STATES PATENT Trice.

JAMES M. OSGOOD, OF SOMERVILLE, MASSACHUSETTS, ASSIGNOR OF ONE- HALF TO HERMAN D. OSGOOD, OF SAME PLACE.

FIXTURE.

SPECIFIOATION forming part of Letters Patent No. 235,560, dated December 14, 1880.

Application filed July 9, 1880. (No model.)

To all whom it may concern:

Be it known that I, JAMES M. OSGDOD, a citizen of the United States, residing at Somerville, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvementin Stop-Lock for a new Spring Curtain-Fixture, of which the following is a specification.

My invention relates to a lock or catch for a spring curtain-fixture, to prevent the spring from running down, and holding the roller at any desired position.

Heretofore locks or catches have been used; but they do not answer all requirements.

I 5 The object of my invention is to simplify and provide a more perfect stop at a less cost of manufacture. I attain these objects by the mechanism illustrated in the accompanying drawings.

Figure l isa section of curtain-roller, showing new improvements. Fig. 2 is a perspective sketch, showing the spindle of the fixture with circular casing and disk or ring-catch. 3 is a front view of disk or ring-catch. Fig. 2 5 4 shows form of beveled holes in plate D and tooth of ring-catch. Fig. 5 shows front of plate with form of holes for holding tooth of ring-catch.

Similar letters refer to similar parts throughout the several views.

Fig. 1, A B O show the completed form of the head end of roller and spindle. Plate D,

Fig. 5, with oneor more holes, is attached to the head end of roller, through which the spindle passes to receive the projecting point or tooth of the ring-catch, as shownin perspective view of Fig. 2 and front view of Fig.

3. O is the spindle end, to which is firmly attached the circular casing F, facing the plate D. The circular casing F is provided with a rim sufficiently broad to allow a hole made through the rim under the spindle and a notch made in the rim over the spindle, as shown in Fig. 2.

5 Fig. 2 is a perspective view, showing the spindle G with the circular casin g, the notched rim, and the hole holding the disk or ringcatch E, with the tooth tipping forward from the notch. The ring-catch E is made with a tenon and tooth. When the ring-catch E is placed in. the circular case the spindle passes loosely through it. The tenon on the ringcatch E is placed in the hole made in the rim of the casing under thespindle. The tooth is received in the notch of the rim over the spindle, allowing a free movement of the ring-catch E upon the spindle, as shown in drawings, Fig. 2.

Fig. 3 is a front view of ring-catch E, showing the tenon and the tooth.

Fig. 4 shows the form of the beveled holes in the plate D. Dotted lines show engagement of the tooth of the ring-catch E in the beveled hole of plate D.

Fig. 5 is a front view of plate D with the form of the holes, one side of each of which is beveled to correspond with the tooth or ringcatch E. When the roller is in operation the tooth of ring-catch E looks firmly in one of the holes of plate D. When thus locked the roller is prevented from turning and secures the curtain at any desired position. When a quick movement of the curtain is made the tooth is thrown from its position, plate D, and the roller is allowed to turn, as desired. '75

The operation of the invention is as follows Having been properly put together, with plate D securely fastened to the head end of roller, the circular casing is firmly attached to the spindle of the roller, with the ring-catch in position within the casin g, as 'shown in drawings, Fig. 2. The curtain is attached to the roller, the spring is sufiiciently wound up, and the roller is placed in the brackets. A quick movement downward of the curtain withdraws the tooth of the ring-catch from plate D, allowing a free and rapid movement of the curtain in any direction, the ring-catch tilting upon its bearing while thus in motion. When the right position of the curtain is attained a stop is made, the ring-catch falls forward toward plate D, the tooth of the ring-catch slipping into one of the holes of plate D, thereby securin g a firm hold of roller and curtain.

I am aware that prior to my invention stop- 5 lock fixtures with pawls and other devices have been made. ltherefore do not claim any such combinations; but

What I do claim as my invention an d desire to obtain by Letters Patent. is

1. In a spring curtain-roller, the conibination, with the roller and. its spindle and a locking device, of a circular casing provided with a rim having a hole made through it and a notch cut in it and adapted to receive the locking-catch the arrangement being such that When the circular casing is secured to the spindle the hole will be under the spindle and the notch over it, substantially as set forth.

2. In a spring curtain-roller, the combination, with the spindle and a casing adapted to receive it, of a ring-catch or disk having a tenon and a tooth made in such manner that When placed inside the casing the spindle will pose specified.

JAMES M. OSGOOD. Witnesses WILLIAM A. MLLLEN, JOSEPH N. BUTLER. 

